Mechanism for drawing cast pipes from molds



J. B. LADD MECHANISM FOR DRAWING CAST PIPES FROM MoLDs Filed June l2, 1923 3 Sheets-Sheet l Nw Nm giu@ .July 1 wm. www

J. B, LADD MECHANISM FOR DRAWING CAST FIFES FROM MOLDS Filed June 12. 1923 1 3 sheets-sheet 2 Mv l wm 3 Sheets-Sheet 5 J. E. LADD MECHANISM FOR DRAWING CAST PIPES FROM MOLDS Flled June l2. 1923 ldatented duly l, td..

.ranura n. n, or naar, rnirirsrtvanra, assrcnon re narran spares er mh PIPE FOUNDRY CUMPANY, F BUINGTOFT, NE JERSEY, A ttl SMFOR DWKNG CMT FIlPlES FROM MOLDS.

Application tiled June 12, 1923. Serial Ito. 644,955.

To all whom it may cof/were.'

Be it known that l, JAMES B. LADD, a citizen of the United States of America, and resident of Ardmore, county of Montgoma ery, State of Pennsylvania, have invented a certain new and useful Improvement in hlechanim for Drawing Cast Fipes from Molds, of which the following is a true and exact description, reference bein had to the 10 accompanying drawings, which crm a part thereof.

My invention relates to mechanism espeeially designed and adapted to engage a cast pipe in the mold in which it is cast M and draw it trom the mold. My improved mechanism is especially designed for use in connection with metalliccentrifugal molds and mold actuating mechanism of the De Lavaud type, although it is adapted as well 2@ tor use with other types of molding apparatus.

The nature of my improvements will be best understood as described in connection with the drawings in whichthey are illusy mi trated and in which Figure 1 is a plan view of my apparatus with the cast pipe shown as withdrawn from the mold.

Fi re 2 is an elevation on the line 2-2 to of Fig. 1, showing also the mold and mold supporting carriage of the ordinary De lliavaud type and the cast pipe in the mold.

Figure 3 is a cross section on the line .a-a or Fig. i.

Fi re d, a cross section on the line 4f-lt et ig.` 1.

Figure 5, a cross section on the line 5-5 ot Fig. 1.'

Fi ure 6, a cross section on the line 6-6 t@ et ig. 1.

Figure 7, a side elevation ot' a portion of the apparatus taken as on the line 7-7 of igure 8 is an elevation on an enlarged scal@ of the pipe gripping mechanism shown in Fig. 2.

Figure 9 is a sectional view on the line 9--9 ot Fig. 8.

Figure 10, a cross section on the line t@ 10-10 ot Fig. 8.

Figure 11, a cross section on the irregular line 11-11 of Fig. 8, and p Figure 12 is a cross section on the line 19t-12 et Fig. 8.

movable.

A, A, indicate longitudinal members ci the framing which support tracks indicated at A', A. B, Fig. 2, indicates the mold which is supported on the carriage B which 1s, in operation, supported on the traclrs A by the wheels B2. C indicates the core ring which is attached to the bell end ot the mold B in the usual manner and is shown as supporting a core indicated at D. F indicates the ipe shown as in the position in the mold in which it is cast. cates the body or framing. of a carria e which is supported on the traclrs it wheels F and is, of course, longitudinally F2 indicates a bracket extendin down from the bottom of the fr and F3 a bracket extending trom the r1ght hand end ot the framing F, and to these brackets is connec the driving cable indicated at Gr. The other end of this cable, indicated at G', is connected to the carriage through the pirvot pins indicated at lil, H, rllhe bars rest u on supporting ins and are ured to a cross bar l to which in turn the cable end Gr' is attached, asshown in Fi 1. Extending upward from the frarning4` are the trunnion supports indicated at Ft, Ft. lin these are supported the trunnion pins l, l, or a rectangular l oke indicated at ll', which is provided wit inwardly extending trunnion pins l2 throu h which it is connected to the guide J whic is supported on the yolre l' and which, by reason-ot the construction'indicated, is capable of universal movement. This guide extends parallel to the length ot the carriage and has its free end elastically supported on the in lla of the spring indicated at dit., whi e, at the same time, the tree end ot this guide is elastically aligned by means of the contacting sprin indicated at W, W. Near the tree en oi the guide d, l torni, as shown in the drawings, a cylindrical hearin indicated at J and at .l2 ll form through ne guide J a transverse passage in communication with its tubular interior for urposes which will be hereafter described. is a tubular sulpport for the gripping mechanism which is ongitudinally movable in the tubular guideway formed in the ide ll and is provided at its right hannd with a Harige K." and at its to with a raclr, indica at K. Thelett han end ot the support FI is slotted so as to at F indi- Fil! iet

two parallel portions K, K4 between which extend the pin indicated at 5 and the spacing device indicated at K", best shown in Figs. 8 and 9. L is a rod extendingthrouo'h the hollow support K and having its rig t hand end threadedg'as indicated at L. The right hand end of the rod L is formed into a head, indicated at I?, which supports pivot pins L", L3. N is a housing secured to the flange K of the support K and which supports they rotatable nut M which screws on the end L of the rod L and is provided, as shown, with bevel teeth which enga e the bevel wheel M' on the shaft M2; h 3 being a hand wheel for rotating this shaft. O is a bar supported on the pinvKE and supporting at its end the pivot pins indicated at O', O. P, P, are gripping bars which are connected to: the ivot pins O by the links indicated at Q, (S, and Q', Q',

' are links connectingethe pivot pins L3 with the i rs P, as st shown in Fi. 8.

R,grRI, Isge Fi s. 1 and 3, are barsiaving gripping jaws R', and pivotally attache to the carriage at Rz, R2. The bars R are supported in horizontal (guideways, as indicated at R3 Fi 3, an they are thrown in and out b t e mechanism shown in Figs. 1, 2 an 4, consisting of,- a collar S fitting on the bearing J of. the guide J and having attached to it.` a lever arm S by which it can be turned on the bearing. At-

tached to this collar S are pivot pins S,

S2, to which are connected ,curvelinks S8, S", connected at S4, S4, with the bars R, R, as best shown in Fig. 4.

U, U, are ivot links secured to the -ends of the core for purposes which are not connected with the present invention. V is a shaft extending transversely through bearings in the brackets F4 and through the opening J2 in the guide-way J. On this shaft is formed or secured the gear Wheel V' which en ages the rack K2 at the top of the support Vand V'2 '1s a hand wheel for actuating the shaft V. W, W, best shown in Figs. 1 and 5, are-upwardly extending springs contacting with the sides of the guide J and serving to -align- In operation, the pipe aving been cast in the mold B, the car F with the support K in extended position, as-shown in Fig. 2 is movedforward into the mold with the vgrippers P, P, contracted so as not to conward the right on the tracks A. and the pipe is withdrawn from the mold, and, obviously, in addition to moving the carriage, the pipe can be shifted to a certain extent by a longitudinal movement of the support K.

The pipe after withdrawal from the mold still supports the core ring C and is supported on any convenient devices (none shown) and to remove the core ring the handwheel Vis rotated so that by the action of the gear wheel V on the rack K2 of sugport K the carriage is drawn towards t e left over support K until the jaws R', R', of the bars R extend over the core ring C. The lever S isthen moved so that acting through the described mechanism the jaws R are caused to grip the core ring after which by a reverse movement of the carriage over guide K the core ring is removed, as shown in dotted lines in Fig. 1.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. Mechanism for drawing cast pipe from molds comprising a lon itiidinally movable carriage, a lon itudinal y extending guide supported on t e carriage, a tubular support for pipe gripping mechanism longitudinally movable in said guide, means for moving said tubular support in the guide, pipe gripping mechanism supported on the end of the tubular support, a rod for actuating the gripping mechanism movable in the tu ular support and means for moving said rod to actuate the gripping mechanism.

2. Mechanism for drawing cast pipe from molds comprising a lon itudinally movable carriage, a longitudinally extendin guide, a universal joint whereby the guie is se curgd to the carriage, elastic sup rting and aligning means for supporting t e free end Uf the guide, a tubular support for pipe gripping mechanism, longitudinally movable in said guide, means for moving said tubular support in the guide, pi e ri ping mechanism supported on the en o? t e tubular support, a rod for actuating the gripping mechanism movable in the tubular support and means for moving said rod to actaute the gripping mechanism.

3. Mechanism for drawing cast pipe from molds comprising a longitudinally' movable carriage, a lon itudinal y extending guide supported on t e carriage, a tubular support for pipe gripping mechanism lon tudinally movable in said guide, means or moving said tubular support in the guide, pipe gripping mechanism supported on the end of the ,tubular support, a rod for actuating thegripping mechanism movable in the tubular support, means for moving said rod to actuate the gripping mechanism, gripping jaws for engaging'the core rin of the mold secured to the carriage an means for actuating said jaws.

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4. Mechanism for drawing cast pipe from molds comprising a longitudinally movable carriage, a longitudinally extending guide supported on the carriage, a tubular sup port for pipe gripping mechanism, longitudinally movable in said guide, means for moving said tubular support in the guide, pipe gripping mechanism supported on the end of the tubular support, consisting of gripping jaws and links connecting said Jaws with the support, a rod for actuating the gripping mechanism movable in the tubular support, links connecting said rod with the jaws and means for moving said rod to actuate the gripping mechanism.

5. Mechanism for drawing cast pipe from molds comprising a longitudinally movable .tudinally mova le in said guide, a rack formed on said support, a shaft supported on the carriage having a gear whee 1n engagement with the rack whereb the support is moved in the guideway, a and wheel or actuating said shaft and gear, pipe gripping mechanism supported on the tubular support, a rod for actuating the gripping mechanism movable in the tubular support and having a threaded end, a fixed nut rotatble on said threaded end, gears for actuating said nut and a hand wheel for actuating the gears. 

